Manufacture of pieced lift heels



Aug. 7, 11923.,

T. LOUND MANUFACTURE OF PIECED LIFT HEELS 4 Sheets-Sheet 1 Filed May 22 MJNE) MANUFACTURE OF PIECED LIFT H EELS Shests-fiheet 5 3 //v Max/727R Filed May 22 7, T. LUND MANUFACTURE OF PIECED LIFT HEELS Filed May 22 1919 4 Sheets-Sheet 4 Patented Aug. 7, i923. v

'2: cures.

THOMAS LUND, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHIN- ERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MANUFACTURE OF PIECED LIFT HEELS.

Application filed May 22, 1919. Serial No. 298,858.

To all whom it may concern:

Be it known that I, THOMAS LUNI), a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in the Manufacture of Pieced Lift Heels, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to the manufacture of heels for boots and shoes.

In one method of making boot and shoe heels, it is customary to employ lifts comprising pieces of leather which might otherwise be waste material, such pieces being adhesively connected edge to edge, and a plurality of such pieced lifts being then adhcsively connected in a pile or log, such log, after due compression and hardening of the adhesive which will be hereinafter termed paste, being then transversely severed to form heels or heel blanks of the required height or thickness.

A particular object of the present invention is to provide a machine which, after being supplied with suitable material such as pieces of scrap leather which have had their edges straightened. will thereafter automatically operate to die the lifts out to proper shape, assemble them in the form of a log and out said log into blanks of the required height or thickness.

With this object in view and in accordance with important features of the invention, the illustrated machine comprises an endless conveyor on which the straight edged pieces of leather are assembled edge to edge, and which then transports the assembled pieces to mechanism for adhesively uniting the pieces, dieing out the lifts and uniting the lifts in the form of a log.

Another noteworthy feature of the invention resides in the provision of means for clamping pieces of material for several successive lifts in edge abutting relationship and holding certain of. the pieces in proper position while a die is cutting a heel lift. Preferably, and as exemplified in the illustrated machine, this mechanism consists of a travelling clamp which acts as a conveyor to carry pieces of material for sev eral successive lifts and hold them in proper relative positions while travelling to the cutting mechanism.

In accordance with another feature of the invention, the illustrated machine is organized to rotate the receiver in which the lifts are assembled to form a log so that the joints between the pieces of different lifts will cross each other.

Further features of the invention consist in the provision of novel means for cutting the log into measured heel heights.

In another aspect, the invention provides a; novel method by which comparatively small pieces of leather, after having any irregular edges straightened, are assembled edge to edge and are then pasted and cut to form lifts and the lifts superimposed into a heel log from which heels may be made.

Other objects and features of the invention will be apparent from the following (:lescription when taken in connection with the accompanying drawings, and theinvention will be set forth in the appended claims.

In the accompanying drawings,

Fig. 1 is a side elevation illustrating my invention in one of its embodiments, lower portions of the machine being omitted;

Fig. 2 is an end elevation looking from the right in Fig. 1, most of the lower frame portion being broken away to illustrate the portions of the mechanism which are omitted. from Fig. 1;

Fig. 3 is a perspective detail of the knife and kicker mechanism hereinafter described;

Fig. 4 represents a section on line 4.4t of Fig. 2, on a larger scale;

Fig. 5 represents a detail section on line of Fig. 4;

$3 is a detail view of a clamp device explained hereinafter;

Fig. 7 is a detail plan View of the Geneva movement mechanism for intermittently rotating the cutting die and the lift guides or walls in which the log is built;

Fig. 8 is a broken out perspective view of the principal elements of the machine;

Fig. 9 is a plan view of one lift of a heel, dotted lines indicating another lift below it.

A suitable frame of the machine comprises a lower portion 15 and an upper portion 16, said frame having brackets 17, 18 (F ig. 1) respectively. supporting shafts 19 and 20. Secured to the shaft 19 is the inner member 21 of a clutch mechanism the outer member of which clutch mechanism carries two pulleys 22, there being two of the pulleys because of employing a pair of carrier belts, presently to be described. The shaft has mounted thereon a pair of pulleys 23 (Fig. 8), the four pulleys 22 and 23 carrying the lower pair of belts 24. Coacting upper belts 25 are mounted on pulleys upon shafts 26, 27. The two pairs of co-acting upper and lower belts are relatively spaced to admit of the passage between them of the dieing out mechanism for operating upon material such as pieces of leather a, a, which material is supplied as I hereinafter described and fed by the belts to proper position for the dieing out mechanism to work thereon.

Since the dieing out mechanism works intermittently as hereinafter described, it is essential that the @arrier belts shall be stationary when the dieing out mechanism operates, and that the feeding shall occur alternately therewith. To thisend, the inner clutch member 21 on the shaft 19 has an arm 28 (Fig. 1) connected by a link 29 with crank pin 30, the throw of which is preferably adjustable as by means of an adjustingscrew 81 constructed and arranged to vary the position of crank pin 80 along a slot 32 provided in a disk 33 carried by a shaft 34 (see also Fig. 2).

In order that the same intermittent trave ing motion may be imparted to the upper belts 25, a gear 35 mounted to rotate with the pulleys 22. meshes with a pinion 36 carried by shaft 26. The shaft 34 is driven by means including a worm wheel 87 carried by said shaft 34, a worm 88, carried by a shaft 89 having belt pulleys 40, being arranged. to mesh with said worm wheel.

The cutting die 41 is best illustrated in 8. Its mounting and operating conncctions will he described her-inafter. Cooperating with the cutting" die 41 is a cut ting block 42 having a rib 48 fitting a correspondingly formed groove in the lower end of a slide 44 (Figs. 1 and 2). The block 42 has means for locking it in place,

. although removable, said means comprising a. spring-actuated locking pin 45 (Figs. 2 and 8) carried by the block 42 and adapted to. engage a keeper recess in the lower end of the slide 44.

To reciprocate the slide 44 vertically in ways supplied by the upper frame portion 16, the following mechanism is provided:

The slide 44 has a transverse pin 46 l and 2) and the frame portion 16 hasa transverse pin 47. Toggle links 48 mounted at their outer ends on the pins 46, 47 have their pivotal connection 49 connected to an operatlng link 50 the outer end of which is mounted on eccentric 51 of shaft 84.

The upper toggle links 48 are mounted on an eccentric bushing 52 held in. rotatively' from the cover 58 is an arm 61.

A portion of the upper end of sore stem 60 is smooth and at the top is a fixed collar 62. Mounted on the smooth portion of said stem is a slidable collar 63 above which is a spring 64.

A nut 65 having its upper outer portion formed as a pinion fits the thread of the piston screw stem 60, below arm 61. It is driven by a beveled pinion 66 carried by a shaft mounted in a bearing 67 rising; from the cover 58, said shaft having a ratchet 68 engaged by a pawl 69 carried by the upperportion Ofthe slide 44, said pawl being; held in en agement with the ratchet by a spring T0. is the slide 44 rises and falls, it necessarily acts, through the pawl 69 and ratchet 68, to intermittently rotate the shaft carrying the pinion 66 so as to gradually depress the piston 59 and force the paste through the ports 55, 54 to discharge a coating of paste upon the upper surface of a plurality of leather pieces 0;, a temporarily held in. position between the block nel the cutting die 41 by the rarrier belts. lVhen the paste in the reservoir 57 is nearly exhausted, the piston will be close to the bottom, thereof. It is desirable to automatically arrest the piston at such point to pre vent damage. The provision of the smooth upper portion of screw stem 60 and the loose collar 63 and spring 64 attains this object. The devices referred to render it impossible for the piston 59 to continue moving down after it arrives close to the bottom of the reservoir 57. hen said piston 59 so close to the bottom that further movement would cause breakage or damage, the smooth portion of the screw stem 60 reaches the nut 65. As soon as the internal thread of the nut passes out of engagement with the upper end of the thread of the stem 60, continued rotation of the shaft carrying: the pinion 66 effects no further downward movement of the piston. Just before the disengagement of the nut from the screw thread, the collar 62 compresses the spring 64 between it and the loose collar 63 which latter is then bearing upon the top of the arm 61. WVhen the piston ceases to descend because of the nut 65 being on the smooth portion of the stem, the spring 64 is under sufficient compression. to bring about reengagement of the nut and the screw stem if reverse operation is imparted to the shaft carrying the pinion 66. Such reverse opera tion may be effected by means of a crank, indicated by dotted lines in Fig. 1, applied to the outer end of the shaftwhich carries the pinion 66.

The circular base 71 of the die 41-1 is retatably supported as presently described. In order to strip the end pieces of leather away from the portions which are within the die, plates 72 are provided yieldingly supported by the ears 73. Below the base 71 is a gear 74 which is actuated intermittently to rotate the die. Also carried by the rotating parts including the die are vertical guides or walls 75 adapted to receive and somewhat tightly hold the log comprising the lifts 7), although said lifts can be gradually pushed down through the space between said vertical walls by the pressure resulting from the successive operations of the block "12 upon the pieces a, (A which are fed to position by the carrier belts 24, 25.

llleshing with the gear 74 is a gear 6 (Fig. 7). compounded with the gear 70 is the driven member 77 of a mechanism practically the same as the well-known GBDQVH movement, the pin. 7 8 of which operates in the usual radial slots of the member 77, while the disk 7 9, having a ci'it-away portion, serves to cooperate with the member 77 in alternately holdingin stationary position the gear 74; and the parts carried thereby which constitute the receiver for the successively cut lifts.

A vertical shaft 80 (Fig. 2) has a. bevel gear 81 at its upper end meshing with a bevel pinion 82 carried by shaft. 39. Since it is necessary to impart to the shaft 80 a. rather high speed of rotation in order to drive certain other parts of the machine at desired speed, it is essential to materially reduce the speed of the Geneva movement from the speed of rotation of shaft 80. To this end, as indicated in Fig. 7, a gear 83 having internal teeth is loosely mounted on shaft 80, while another gear 8 eccentrically mounted relatively to the gear 83, and having a lesser number of teeth than the teeth of internal gear 83, is carried by the shaft 80. This is a. well-known device for reducing speed and needs no further description herein than to state that the eecentric movements 0t gear 84 within gear 83 slowly rotate said gear 83 and also the pin 78 and the disk 7 9 of the Geneva movement.

Slidably mounted in the lower portion 15 of the frame of the machine is a frame 85 (Figs. 1, 2, 4i and 8). Said frame has cars 86 connected by chains 87 passing over pulleys 88 with counterweights 89. Said counterweights, although small in 2 because of lack of space on the sheet, are

to be understood as slightly overbalancing the sliding frame 85 and all the parts carried thereby so that the frame 85 will possess a normal tendency to rise when it has been depressed below the position shown in Fig. 2. As will he explained hereinafter, the frame 85 and the parts carried thereby are depressed by the building up process of the log resulting from the additions of heel lifts to the upper end of the die and log receiver.

As indicated by dotted lines in Fig. 2, a sleeve 90 is mounted in a circular opening in the upper bar of the frame 85, said sleeve being retained in position while free to rotate, by means of a collar 91. The sleeve 90 carries at its lower end a flat ring or disk 92, andthe sleeve also has agear 93 keyed to it so that said sleeve and the disk 92 will be rotated by the actuator for the gear 93 presently described. Surrounding the sleeve and rotatable thereon and immediately above the disk 92 is a flat ring or disk 94; having a ear 95 pinned orotherwise secured to it. .t is to be understood that, and as illustrated in Fig. 4-. the gears 93, 95, as well as the disks 92, 94, are ring-shaped, having a circular space within them of suflicient diameter to permit the intermittent rotation of the walls 75 of the log receiver in said circular space.

Both. of the disks 92, 9 1- are rotated in the same direction as indicated by the two parallel arrows at the top of Fig. 4, but one is rotated faster than the other for a reason presently explained. Pinions 96, 97, the latter being smaller than the former, (Figs. 2 ands) mesh respectively with the gears 93, 95, and said pinions 96, 97 are driven by gearing hereinafter described.

The shaft 80 does not extend through the sliding frame 85 but only partly thereinto. Another shaft 107, however, which moves vertically with the sliding frame is in aline ment with the shaft 80. Pinned to the lower end of shaft 80 is a collar 98 (Fig. 2) and at some little distance above said collar an-' other collar 99 clamped on the shaft. Mounted on the shaft between the two collars is the hub 100 of a belt-shaped clutch member 101. A spring 102 acts to normally hold the clutch member against the collar 99, this mechanism permitting said clutch member to have a slight sliding movement upon the shaft 80,although it is fitted to be rotated by said shaft, as by means of a key indicated at 103.

The outer clutch member 104 has its hub 105 loosely encircling the shaft 80, and the lower flanged rim of said clutch member 1 10-]; carries a gear 106 which meshes with pinion 96 (Figs. 2 and 4:). i

The shaft .107 is mounted in bearings formed in the sliding frame 85 and is in alinement with the shaft 80. Secured to the :a roll 115 entering the cam groove 110 of the upper disk.

The block 112 carries also a downwardly projecting pin 116 2 and a) for the outer end of a spring 117 mounted upon a pin 118 carried by disk 92 and under such tension that the spring has a normal tendency to hold the knife retracted in the position indicated in Figs. 1 and 8. As has been described, the two disks 92, 91 both revolve in the same direction, but since the two pinions 96, 97 are compounded so that both of them are driven by the gear 106, the disk 92 which is rotatably carried by gear rotates faster than the disk 941 to which the gear 95 is pinned. This differential speed of the two disks 92 and 94; results in the cam 110 gradually forcing the knife 113 into the log of heel lifts, although the two disks revolve a number of times before the knife point reaches the axis of intermittent rotation of the log itself. As has been stated, the spring 117 acts in such direction as to yieldingly oppose inward movement of the knife, and it will therefore be understood that as soon as the requisite number of rotations of the two disks which will effect the complete travel of the roll 115 from the outer to the inner end of the spiral groove has been reached, the spring 117 immediately throws the knife back or out to the position illustrated in Figs. 41 and 8.

i I will now describe the means which will automatically remove to one side the sec tion of the log which has been cut off by the knife 113. This mechanism includes an arm 119 which 1 term a kicker, said arm being pivotally connected at 120 to the disk 92 and having an arm 121 (Figs. 3, 4: and 8) at the end of which is a bracket 122 having a foot piece or lug 123 carrying also a pin 12 1 as best seen in Fig. A. latch member 125 pivoted to the bracket 122 at 126 and the shank of said latch member passes under the pin 124: and is normally held up against said pin by a spring 127. The knife block 112 has a bevel-faced catch 128 adapted to coact with the latch member 125 as presently described. A bevel-edged tripper block 1.29 is secured to the under surface of disk 92 in position to co-act with the catch devices presently described. A spring 130 which is of less strength thanthe spring 117, is connected. at one end to the kicker 119 and at the other end to the disk 92 and tends to normally hold the kicker 119 in contact With an adjustably mounted stop 131 carried by the disk 92. The kicker operates as follows: During the operation of the machine which 'results in gradually forcing the knife inthe roll 115 reaches the point where the spiral groove 110 merges into the inner end of radial groove 111, the knife and its block are quickly shifted radially outward by the force of spring 117. Since at this time the latch members 125. 128 are interengaged, the arm 121 of the kicker is thrown quickly out ward so that the kicker 11.9 swings in so as to knock off, from the support below which is yet to be described, the section which has been severed from the log by the knife 113. This action is effected because the spring 117 is stronger than the spring 130 which latter yields during the kicking action of the memher 119. At the end of the outer sliding move ment of the knife block. the latch member 125 of the kicker is carried under the tripper 129 the beveled face of which acts upon the beveled face of the member 125 to de press the latch and disengage it and the kicker from the catch 128 of the knife block so that the stretched. spring 130 then in stantly throws the kicker back to the position indicated in Fig. 1, ready for the next operation.

A support 132 for the lower end of the log (Figs. 2 and 8) has a sleeve which is vertically adjustable in a bearing formed in the lower part of the vertically movable frame 85, said sleeve being internally threaded to engage a screw 133 the lower end of which has a head 13 1. Mounted on the screw 133 between its head 134 and a collar 135 pinned to said screw is a block 136 having a roll 137. A. pointer 138 carried by the log support 132 co-operates with a scale 139 carried by the sliding frame 85 to indicate the'height of the support 132 relatively to the frame 85 as a whole. By adjusting the screw 133, the height of the support 132 may be determined according to the pointer and scale so as to measure in a predetermined manner the height or thickness of the portion of the log projecting below the disk 92 and which is to be cut off by the knife and shifted aside by the kicker. The roll 137 enters a cam groove in a disk 140 carried by a shaft 1411 mounted bearings 1412,1451

(Fig. 2) provided in lugs or arms of the frame 85, the position of the shaft relatively to the sliding frame being best indicated in Fig. 4-. As shown in Figs. 2 and S, the shaft 14:1 has a worm wheel in opcratively engaged by a worm 1 1-5 pinned to the lower portion of the shaft 107. The shaft 1&1 has at its end a cam 1-l6 (see also Fig. 6) adapted to act upon an arm i l? pivoted at 148 to the sliding frame 85 and having a camshapcd portion 149 adapted to bind or clamp against a smooth surface portion 150 of the ri id frame portion 15. A. spring 151 between the frame 85 and the arm 14L? holds the arm against the face of the cam 146 of shaft 1 1-1. These parts are so relatively proportioned and arranged that so long as the cam H6 is not acting upon the arm 1 17, the spring 151 holds the arm in such position that its clamp 149 binds against the face 150 and locksthe sliding frame against upward movement. That is. so long as the cam 14.6 is not acting, the frame 85 is held by the binding clamp 119 so that said frame can not rise under the influence of the counter-balance weights 89. The object of the cam 1 16 is to release the clamp at the proper time, as presently described.

In operation, the attendant, after having either selected pieces 0 of leather having straight edges or after having cut pieces of leather so that they will have straight edges, lays them upon the portions of the belt 241: at the right in Fig. 1, which portions serve a traveling platform, feeding said pieces a, a with their edges together so that they will travel to the position indicated in Fig. 8 with the straight edges in contact with each other and clamped between the belts 24:, In other words. the attendant need only simply assemble the pieces of leather upon the traveling platform after which the op eration of the machine is automatic.

lVhen the cutting block descends, it sin'iultaneously applies paste to the pieces a, o and cuts them to theform of the particular dic ll which is in placein the machine and pushes said pieces in their edge-to-eiflge condition into the die. Successive similar operations including the successive applications of paste, build up a log comprising superimposed lifts 7) until the lower end of said log reaches the support 182. As the log is built or formed by the successive cutting of lifts, the die and the log walls '75 are rotated step-by-step so that no two contacting lifts will be at all likely to have the joints or dividing lines between pieces in line with each other. In other words, the joints between the pieces o, a of successive lifts will cross each other as will be seen by comparing the full and dotted lines of Fig. 9.

In practice there will be sufficient friction between the edges of the lifts and the inner faces of the walls 7 5 to keep the lifts under considerable vertical pressure as the log is being built. l l 'hen finally the lowermost lift reaches the log support 132, further building operation acts through the support 132 to push the sliding frame 85 down until the outer clutch member 104: makes operative contact with the inner tapering clutch memher 101. Since the clutch member 101 rotates with shaft 80, the coupling of the clutch members as just described begins to act through the gearing illustrated in Fig. 4t and hereinbefore described to start the knife 113 in operation. That is, the disks 92, 94, begin to revolve and cause the projection of the knife into the log at the proper point above the bottom of the latter which has been previously determined by setting the support 132 according to the indicator or measuring device. At the same time, the lower alincd shaft 107 has commenced to revolve and the worm 145 acts through the worm wheel lets-l to rotate shaft 14:1 so that the cam l i-i) of the latter acts upon roll 137 to lower the support 132 to relieve pressure sufficiently to enable the knife to perform its operation without excessive binding in the log.

K is to be understood that during the operation just described the sliding frame 85 can be pushed downwardly because the cam clamp 145) is so shaped as not to oppose downward movement of the frame. The clamp 119, in other words, is not to prevent downward movement of the frame 85, but is to prevent any rise of the latter until such time as the kicker has acted to remove the section which has been cut from the log by the knife. The timing of the operation of cam 1 16 is such as to act upon the arfn 14:7 and release the clamp 149 immediately after the kicker has acted so that the counterweights 89 can exert their natural tendency to raise the frame 85 and all parts carried thereby to bring the support 132 back to the bottom of the log.

Having described my invention, What I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the class described, having, in combination, lift cutting mechanism, and means for feeding lift sections thereto with the'edges of said sections in abutting relationship and with the long axes of sections for successive lifts arranged substantially in parallelism.

2. A machine of the class described, hav ing, in combination, lift cutting and paste applying mechanism comprising a die and a block provided with paste-distributing channels, means for feeding lift sections thereto with the edges of said sections in abutting relationship, and means for rotate ing the die after each lift cutting operation.

3. it machine of the class described having, in combination, lift cutting, paste-applying, and heel log-building mechanism, comprising a die having a log guiding and holding extension, and means for feeding lift sections thereto with the edges of said sections in abutting relationship.

4. A machine of the class described, having, in combination, lift cutting mechanism, and a strip-clamping carrier for conveying irregularly shaped strips to the cutting mechanism and for holding the strips for successive lifts in substantially the same angular relationship with respect to the carrier while being conveyed and cut.

5. A machine of the class described having, in con'ibination, lift cutting mechanism comprising a die, a strip carrier comprising a pair of travelling clamping members designed to receive the strips always with the long dimension of the latter transverse to the direction of movement of the carrier and constructed and arranged to deliver strips into position to be cut, and means for causing rotation of the die and carrier relatively to each other after each lift cutting operation to position the lift pieces of each successive lift with their long axes pointing in a direction different from those of the superjacent or sub jacent lift pieces.

6. A machine of the class described having, in combination, lift cutting mechanism comprising a die, two pairs of endless belts spaced to travel past opposite sides of the cutting mechanism and having co-acting portions to clamp sheet material and carry it to position to be cut, and means for rotating the die on its axis to vary its position angularly with respect to a given dimension of the sheet material.

7. A machine of the class described having, in combination, lift cutting mechanism comprising a die, two pairs of endless belts spaced to travel past opposite sides of the cutting mechanism and having co-acting portions to clamp end portions of strips and hold them relatively to each other during their travel to position to be cut, and means for rotating the die on its axis at regularly recurring periods.

8. A machine of the class described hav ing, in combination, lift cutting mechanism, two pairs of endless belts spacedto travel. past opposite sides of the cutting mechanism and having co-acting portions to clamp end portions of irregularly-shaped strips and hold them in abutting side by side relationship to each other during their travel to position to be cut, the lower belts of the two pairs being longer than the upper ones to provide a platform for assembled strips, and means for rotating the die after each cutting operation on the strips.

9. A machine of the class described having, in combination, lift cutting mechanism, a receiver for successively cut lifts, and

means for rotating the receiver about its own vertical axis.

10. A machine of the class described having, in combination, lift cutting mechanism, a receiver for successively cut lift-s, and means for intermittently rotating the receiver about its own vertical axis.

11. A machine of the class described having, in combination, lift cutting mechanism, means for delivering edgewise assembled pieces of material in position to be cut, a receiver for successively cut lifts, and means for intermittently rotating the receiver about its own vertical axis so that the section lines of successive lifts are angularly related to each other.

12. A machine of the class described having, in combination, lift cutting mechanism, a receiver for successively cut lifts, and means for imparting a partial rotation to said receiver after each lift has been supplied thereto.

18. A machine of the class described having, in combination, lift cutting mechanism, means for delivering edgewise assembled pieces of material to position to be cut, a receiver for successively cut lifts, and means for imparting to said receiver, after each lift has been supplied thereto, a partial rotation of substantially 90.

14. A machine of the class described having, in combination, means for assembling heel lifts to form a log, and means for auto matically cutting sections of predetermined thickness from one end of the log during the formation of the log.

15. A machine of the class described having, in combination, means for assembling heel lifts to form a log, and means controlled by the accumulation of lifts for automatically cutting sections of predetermined thickness from one end of the log during the formation of the log.

16. A machine of the class described. having, in combination, a lift receiver, means for supplying lifts to the upper end thereof to form a log, and means for automatically removing sections of measured thickness from the lower end of the log.

17. A machine of the class described having, in combination, a lift receiver, means for supplying lifts to the receiver to form a log, means for automatically removing sections of measured thickness from the log? and means for varying the thickness of the rem o ved section s.

18. A machine of the class described comprising lift cutting and log building mechanism, and a conveyor for holding small pieces of lift material with the long axes of the pieces all lying transversely of the conveyor, and means for causing relative movement between the conveyor and said mechanism for varying the angular relationship of the pieces of lift material with respect to said mechanism.

19. A machine of the class described com prising lift cutting and log building mechanism, a conveyor for automatically delivering small pieces of lift material thereto in predetermined and controlled relationship, and means for severing the log successively into sections.

20. A machine of the class descril ed comprising a receiver for lifts, means for cutting lifts and successively supplying them to the upper end of the receiver to form a lift log, a movable support for the lower end of the log, and means for holding the support to enable the log to be subjected to pressure and for automatically releasing the support to relieve the pressure.

21. A machine of the class described comprising a receiver for lifts, means for cutting lifts and. successively supplying them to the upper end of the receiver to form a lift log, a counterbalanced movable support for the lower end of the log, means for holding the support to enable the log to be subjected to pressure and means for automatically releasing the support to relieve the pressure at predetermined periods.

22. A machine of the class described comprising a receiver for lifts. means for cut ting lifts and successively supplying them to the upper end of the receiver to form a lift log a movable support for the lower end of. the log, means for holding the support to enable the log to be subjected to pressure, means for automatically releasing the support to relieve said pressure, and means for cutting off a lower portion of the log when said pressure is relieved.

23. A machine of theclass described comprising a receiver for lifts, means for cut-- ting lifts and successively supplying them to the upper end of the receiver to form a lift log, a counterbalanced movable frame having a support for the lower end of the log, and means for alternately clamping said frame and releasing it.

24;. A. machine of the class described having, in combination, means for assembling heel lifts to form a log, a knife, and means for causing the knife to form a circular cut gradually approaching the longitudinal center of the log.

A machine of the class described having. in combination, means for assembling heel lifts to form a log a knife, and means for causing the knife to form a spiral cut in the log in a plane perpendicular to the longitudinal axis thereof.

96. In a machine of the class described, a rotatable heel lift cutter having lift guides depending therefrom, and means for feeding material to position to be cut.

27. In a machine of the class described,

a heel lift cutter, means for feeding material to position to be cut, means including a reservoir for supplying paste to the material, a piston in said reservoir, means for actuating the piston, and means for arresting actuation of the piston when it reaches a predetermined position in the reservoir.

28. In a machine of the class described, a heel lift cutter, means for feeding material to position to be cut, means including a reservoir for supplying paste to the material a piston in said reservoir, a screw stem connected to the piston and having a smooth portion, a nut engaging the screw stem, and means for actuating said nut.

29. A machine of the class described comprising an upper fixed frame and a lower vertically movable frame, heel log building mechanism carried by the upper frame, the lower frame having a member with which the log cont-acts, and means carried by the lower frame for severing sections from the log.

30. A machine of the class described comprising an upper fixed frame and a lower vertically movable frame, heel log building mechanism carried by the upper frame, the lower.. frame having a member with which the log contacts, means for yieldingly supporting said movable frame in opposition to the pressure resulting from the log building operation, and means carried by the lower frame for severing sections from the log.

31. A machineof the class described having, in combination, means for superimposing heel lift material to form a log, a knife and knife carrier, means for rotating the carrier around the log, and means for inipelling the knife toward the axis of rotation of the carrier.

32. A machine of the class described having, in combination, means for supe'imposing heel lift material to form a log, a rotary disk having a central aperture for the passage of the logca radially movable knife carried by said disk, and a cam for actuating said knife. said cam being mounted to rotate in the same direction as the knife carrying disk but at a different speed therefrom.

33. A machine of the class described having, in combination, means for superimposing heel lift material to form a log, a. pair of disks having central apertures for the passage of the log, means for rotating said disks ditfercntially in the same direction. a radially movable knife carried by one of the disks, and a cam for actuating the knife carried by the other disk.

84;. A. machine of the class described having. in combination, means for superimposing heel lift material to form a log, a pair of disks having central apertures for the passage of the log, means for rotating said disks differentially in the same direction, one of said disks having a spiral groove and a substantially radial groove connecting the ends of the spiral groove, a knife carried by the other disk and movable relatively thereto toward and from the axis of rotation of the disks, said knife having a projection engaging sait groove, and a spring connected to said knife to press it outwardly.

35. A machine of the class described having, in combination, means for superimposing' heel lift material to form log, a cutter mounted to rotate around the log, means for rotating the cutter and forcing it toward its axis of rotation to sever a section from the log, a section-dislodging arm, and means for actuating said arm after the cutter completes its operation.

36. A machine of the class described having, in combination. means for superimposingheel lift material to form a log, a cutter for severingthe log at a point near its lower end, and an arm operative in a plane below that of the cutter to shift aside the section severed by the cutter.

37. A machine of the class described having, in combination, means for superimposing heel lift material to form a log, a pair of rings in position to surround the lower end of the log, means for rotating the rings, and a knife and an arm operatively can ried by said rings and constructed and arranged to successively sever and dislodge sections from the lower end of the lo 38. A machine of the class described having, in combination, means for superimposing heel lift material to form a log, a pair of rings in position to surround the lov-Jer end cf the log, means for rotating the rings, and a knife and an arm operatively carried by said rings and constructed and arranged to successively sever and dislodge sectiors from the lmver end of the log, means being provided to determine the plane of operation of the knife relatively to the bottom of the log.

39. A machine of the class descr'bed having, in combination, means for superimposting heel lift material to form a log. a pair of rin 's in position to surround the lower end of t e log, means for rotating the rings, and a knife and an arm operatively carried by said rings and constructed and arranged to successively sever and dislodge sections from. the lower end of the log, means being provided to variably determine the plane of operation of the knife relatively to the bottom of the log to measure tl e height or thickness of the sections to be severed.

40. A machine of the class described having, in combination, means for superimposing heel lift material to form a log, a pair of rings in position to surround the lower end of the log, means for rotating the rings, a knife and an arm movably mounted on one of the rings to operate in different p anes, means controlled bythe other ring for I the knife to-operate progress rel: tcwszird its axis of rotationas it rea spring; for returning; the knife to outer position, and catch devices to cause the outward movement of the knife to actuing he *1 lift material to. form a log, an ad 'justable support for the lower end of the log, a measuring indicator carried by said support, a knife for successively cutting off lower sections of the log, and means Whereby the distance 0 f the cut from the lower end of the log will be controlled by the adjustment of said support.

ilhat improvement in methods of making pieced-lift heel blanks which consists in assembling pieces of material in edgewise abutting relationship, and simultaneously cuttin and pasting said pieces while held in said relationship. i

That improvement in methods of mak ing pieced-lift heel blanks which consists in assembling pieces of material in edgewise abutting relationship, simultaneously cut ting and pasting said pieces While held in said relationship, and assembling a series of the assembled. and cut pieces one upon another under pressure to form a log.

45. That improvement in methods of making pieced-lift heel blanks which consists in assembling pieces of material in edge wise abutting relationship, simultaneously cutting and pastingsaid pieces while held in said relationship, stackin plurality of sets of assembled pieces one upon another to form a log and successively cutting the lower end of the log transversely.

4&6. That improvement in methods of making pieced-lift heel blanks which consists in assembling pieces of 'material in edgewise abutting relationship, cutting and past-- in; said pieces while held in said relationship to form pieced lifts, stacking pasted lifts in superimposed. relationship to form a log, and intermittently rotating the log to ause the joints between the pieces of super imposed lifts to cross each other.

47. In a machine of the class described, traveling means for supporting blanks in edge-Wise abutting relationship for a plurality of successive lifts, in combination with means for simultaneously pasting and cutting lift sections from the blanks supported on said traveling means.

48. In a machine of the character described, means arranged to travel along a straight path and constructed to support blanks in edgewise abutting relationship, in combination with means for simultaneously pasting and cutting lift sections from the blanks in such manner as to provide cornplete lifts arranged in superposed relationship.

19. In a machine of the character dcscribed, a receiver for lifts, means for simultaneously pasting and cutting lift sec tions from blanks and for forcing the same into the receiver, and spaced carrier members upon which the blanks are placed in edgewise abutting relationship to be positioned for the operation of said means.

50. In a machine of the character described, a carrier for supporting blanks in ed 'ewise abutting relationship for a plurality of successive lifts, means for simulaneously pasting and cutting lifts from said blanks and depositing them in superposed relation to form a log, and means for successively cutting heel sections from the lower end of the log.

51. In a machine of the character de-- scribed, means for supporting blanks in an edgewise abutting relationship, cutting and pasting means for cutting lifts from the blanks while supported on thefirst mentioned means and depositing the lifts in superposed relation to form a and means for intermittently rotating the log to cause the joints between the pieces of superposed lifts to cross each other.

52. That improvement in methods of making pieced-lift heels or heel sections which consists in assembling pieces of material in edgewise abutting relationship, cutting the pieces to form pieced lifts, stacking the pieced lifts in superimposed rela tionship, and intermittently rotating the stack to cause the joints between the pieces of superimposed lifts to cross each other.

53. That improvement in methods of making pieced-lift heels or heel sections which consists in assembling pieces of material in edgewise abutting relationship, cutting the pieces while held in said relationship to form pieced lifts, and simultaneously pasting and stacking the pasted lifts one upon another to form a log.

54:. That improvement in methods of making pieced-lift heels or heel sections which consists in assembling pieces of material in edgewise abutting relationship, cutting the pieces While held in said relationship to form pieced lifts, and simultaneously with the cutting operation pasting and stacking the pieced lifts one upon another to form a log.

That improvement in methods of making pieced-lift heels or heel sections which consists in assembling pieces of material in edgewise abutting; relationship, cutting the pieces while held in said relationship to form pieced lifts, simultaneously pasting and stacking the pieced lifts one upon another to form a log, and intermittently rotating the log to cause the joints between the pieces of superimposed lifts to cross each other.

56. A. machine of the class described having. in combination, means for assembling heel lifts to form a log, and means controlled by the advancing end of the log for cutting sections from the end thereof.

57. In a machine of the character scribed, a lift receiver, means for supplying lifts to the upper end tl'iereof and for forcing' the lifts into the receiver to form a log, and means for removing sections of measured thicknesses from the lower end of the log.

58. In a machine of the character de scribed, a lift reeciver, means for supplying; lifts to the upper end thereof to form a log, means for rotating the log, and means for operating upon the log to cut heels or heel sections therefrom.

59.111 a machine of the character described, means for assembling heel lifts to form a loggand means controlled by the advancing end of the log for cuttingsections from the end thereof while the log is still being advanced due to the continued operation of the first-mentioned means.

60. That improvement in methods of making pieced-lift heels or heel sections which consists in assembling pieces of material in edgewise abutting relationship, cutting: the pieces to form pieced lifts. pasting and stacking; the lifts one upon another to form a log, and while continuing these operations at the forming end of the log, cutting off heels or heel sections from the other end of the log.

61. That improvement in methods of making heel logs which consists in assembling pieces of material in edgewise abutting relationship and, while moving; the material along in a direction substantially at a right angle to the lone; dimension of the pieces, constantly adding other pieces to the line while dieing out lifts from the front end of the line, and rotating the die a given amount between each dieing out operation so as to position the lift pieces in the die with their long axes pointing in different directions in the superjacent and subjacent lift pieces, thus breaking the joints between adjacent lifts.

In testimony whereof I have signed my name to this specification.

THOMAS LUND. 

